text: const express = require('express');
  const next = require('next');
  const Router = require('./routes').Router;
  
  const port = parseInt(process.env.PORT, 10) || 3000;
  const dev = process.env.NODE_ENV !== 'production';
  const app = next({ dev });
  const handle = app.getRequestHandler();
  
  app.prepare().then(() => {
    console.log('app prepare============');
  
    const server = express();
  
    Router.forEachPattern((page, pattern, defaultParams) => {
      console.log(pattern, page);
  
      return server.get(pattern, (req, res) => {
        console.log(pattern);
  
        return app.render(
          req,
          res,
          `/${page}`,
          Object.assign({}, defaultParams, req.query, req.params)
        );
      });
    });
  
    server.get('*', (req, res) => handle(req, res));
    server.listen(port);
  });
  